RDF Schema - change log

Status of this Document

This change summary is provided as a convenience only; the RDF
Schema Specification itself is the final authoritative record of the
current state of the RDF Schema work. This changes list is
provided for the convenience of implementors.

Textual Changes

Some text concerning constraints was moved from section 2.1 (The Type
System) to section 3 (Constraints). A number of paragraphs were moved
and/or edited for readability.

The 'fictional' URI references previously used in the specification were
changed to refer to examples within the W3C URI namespace.

The 'capitalisation conventions' guideline was removed; this may be more
suited to future 'best practice' guides or FAQ materials.

Clarified references to the Dublin Core: we distinguish more carefully
between the Dublin Core Element Set and the Dublin Core Metadata
Initiative.

The term 'consistency' is now avoided, since the relationship between our
previous use of this term and its sense in logic was not clear.

Section 4.2: significant edit on 'consistency'. The phrase 'consistency
constraints' is now avoided in favour of the simpler 'constraints'. The
sentence which claimed that "this specification introduces the notion
of 'consistent' and 'inconsistent' models" has been removed.

Under extensibility, a clarification: "All agents written to this" becomes
"all agents written solely to this..." since implementations of
future extended RDFS specs may also be implementations of this specification.

A number of typos were corrected. The use of
<code>code</code> when mentioning RDF constructs has been made
more consistent, and a number of sentences have been reworded for clarity.

The tentative PICS-in-RDF example sketched as an appendix in the PR
version of the spec has also been removed, to allow that work to be
progressed indepedently of the core RDF Schema Specification.
This is available as a separate document.

The two versions of the XML/RDF representation of the RDF Schema
specification have been combined. The two versions served only to
demonstrate the syntactic options available using the current RDF
syntax. Since we now anticipate new ways to represent RDF in XML syntax,
this emphasis seemed inappropriate.

The P3P section has been revised.

The mention of DTDs and their relationship to RDF has been expanded to
cover XML Schemas.

The XML/RDF mistakenly asserted that rdfs:Literal was
rdfs:subClassOfrdfs:Resource.

Created an abstract and table of contents. Renamed 'sitemaps and other
such navigation tools' section to 'Sitemaps and Concept Navigation'.

Gave the specification a number (this is RDF Schema 1.0).

refined text describing rdfs:seeAlso. The document now says 'might
provide' not 'does contain' information about the resource, better
reflecting the Working Group's original design.

Removed lengthy syntax-oriented comment from 2.3.2.1 example

removed syntax-centric note from definition of rdfs:Resource

removed java analogy from definition of rdfs:Resource

Moved section 1.2 into the first paragraph of 2.0 and 4.1.2;
moved one sentence from start of 4.1.2 to lead in of 4.1

Images

rdfs:Literal was misrepresented in figure 1; Literals are a class, and are
now depicted as such.

Constraints that were intended for rdf:object were depicted
as applying to rdf:value (this was
the old RDF Model name for the property we now call
rdf:object). The constraints figure also mistakenly
set an rdfs:range constraint on the
rdf:object; this was inappropriate since both literals and
resources can be the object of a statement.

The figure depicting the Vehicles class hierarchy has been revised.

RDF/XML

The RDF representation of the core Schema, and the RDF Schema namespace
URI, have been made independent of the URI of the Schema Specification
document.